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    21 Products

    Combination Squares

    Replace your try square, miter square, depth gauge, marking gauge, 90° level, ruler, and scriber with one tool. Blades labeled with numeric increments that are less than 1" are quick-reading.
    Blades with Square Head with Built-In Level
    Image of Product. Front orientation. Contains Annotated. Squares. Combination Squares, Blades with Square Head with Built-In Level.
    Image of Product. Inch/Metric. Front orientation. ZoomedIn view. Contains Annotated, MultipleImages. Squares. Combination Squares, Blades with Square Head with Built-In Level, Inch, Metric.

    Inch/Metric

    Square head checks 90° angles.
    Etched—Etched graduation marks are wear resistant.
    Blade
    Graduation
    Plastic Square Head
    Blade Lg.
    Front Graduations (Numeric
    Graduations)
    Back Graduations (Numeric
    Graduations)
    Wd.
    Thk.
    Material
    Color
    Color
    Type
    Head
    Lg.
    Each
    Inch/Metric
    12"/304 mm1/32" (8/32"), 1 mm (10 mm)1 mm (10 mm), 1/16" (1")1"3/32"Stainless SteelSilverBlackEtched4 9/16"00000000000
     
    Blades with Square Head with Built-In Level and Scriber
    Image of Product. Front orientation. Contains Annotated. Squares. Combination Squares, Blades with Square Head with Built-In Level and Scriber.
    Image of Product. Inch/Metric. Front orientation. ZoomedIn view. Contains Annotated, MultipleImages. Squares. Combination Squares, Blades with Square Head with Built-In Level and Scriber, Inch, Metric, 10 mm Numeric Graduations - 2, 8/32" Numeric Graduations.

    Inch/Metric

    Image of Product. Metric. Front orientation. ZoomedIn view. Contains Annotated. Squares. Combination Squares, Blades with Square Head with Built-In Level and Scriber, Metric, 10 mm Numeric Graduations - 2, 10 mm Numeric Graduations.

    Metric

    Square head checks 90° angles.
    Etched—Etched graduation marks are wear resistant.
    Blade
    Graduation
    Zinc Square Head
    Blade Lg.
    Front Graduations (Numeric
    Graduations)
    Back Graduations (Numeric
    Graduations)
    Wd.
    Thk.
    Material
    Color
    Color
    Type
    Head
    Lg.
    Each
    Inch/Metric
    12"/300 mm1/32" (8/32"), 1 mm (10 mm)1 mm (10 mm), 1/16" (1")1"3/32"Stainless SteelSilverBlackEtched4 5/8"00000000000000
    16"/400 mm1/32" (8/32"), 1 mm (10 mm)1 mm (10 mm), 1/16" (1")1"3/32"Stainless SteelSilverBlackEtched4 3/4"0000000000000
    6"/150 mm1/32" (8/32"), 1 mm (10 mm)1 mm (10 mm), 1/16" (1")13/16"5/64"Stainless SteelSilverBlackEtched3 11/16"0000000000000
     
    Metric
    150 mm1 mm (10 mm), 1 mm (10 mm)1 mm (10 mm), 1 mm (10 mm)13/16"5/64"Stainless SteelSilverBlackEtched3 11/16"000000000000
    300 mm1 mm (10 mm), 1 mm (10 mm)1 mm (10 mm), 1 mm (10 mm)1"3/32"Stainless SteelSilverBlackEtched4 5/8"000000000000
    400 mm1 mm (10 mm), 1 mm (10 mm)1 mm (10 mm), 1 mm (10 mm)1"3/32"Stainless SteelSilverBlackEtched4 5/8"000000000000
     
    Blades with Square Head, Angle Finder, and Scriber
    Image of Product. Front orientation. Contains Annotated. Squares. Combination Squares, Blades with Square Head, Angle Finder, and Scriber.
    Image of Product. Inch/Metric. Front orientation. ZoomedIn view. Contains Annotated, MultipleImages. Squares. Combination Squares, Blades with Square Head, Angle Finder, and Scriber, Inch, Metric.

    Inch/Metric

    Square head checks 90° angles.
    Angle finder measures any angle from 0° to 90° and has a chart to convert angle to pitch.
    Etched—Etched graduation marks are wear resistant.
    Blade
    Graduation
    Zinc Square Head
    Blade Lg.
    Angle Finder Angle
    Measured Range
    Front Graduations (Numeric
    Graduations)
    Back Graduations (Numeric
    Graduations)
    Wd.
    Thk.
    Material
    Color
    Color
    Type
    Head
    Lg.
    Each
    Inch/Metric
    12"/300 mm0° to 90°1 mm (10 mm), 1/32" (4/32")1 mm (10 mm), 1/16" (1")1"5/64"SteelSilverBlackEtched4"0000000000000
     
    Blades with Square Head with Built-In Level, Center Head, Reversible Protractor Head with Built-In Level, and Scriber
    Image of Product. Front orientation. Contains Annotated. Squares. Combination Squares, Blades with Square Head with Built-In Level, Center Head, Reversible Protractor Head with Built-In Level, and Scriber.
    Image of Product. Inch/Metric. Front orientation. ZoomedIn view. Contains Annotated, MultipleImages. Squares. Combination Squares, Blades with Square Head with Built-In Level, Center Head, Reversible Protractor Head with Built-In Level, and Scriber, Inch, Metric.

    Inch/Metric

    Square head checks 90° angles.
    Protractor head measures angles.
    Center head identifies the center on pipes, rods, and shafts.
    Etched—Etched graduation marks are wear resistant.
    Blade
    Graduation
    Aluminum Square Head
    Blade Lg.
    Front Graduations (Numeric
    Graduations)
    Back Graduations (Numeric
    Graduations)
    Wd.
    Thk.
    Material
    Color
    Color
    Type
    Head
    Lg.
    Each
    Inch/Metric
    12"/300 mm1 mm (10 mm), 1/32" (4/32")1 mm (10 mm), 1/16" (1")1"3/32"SteelSilverBlackEtched4 1/4"000000000000
     

    Starrett High-Accuracy Combination Squares

    Replace your try square, miter square, depth gauge, height gauge, center-point finder, and level. The blade on these squares meets Fed. Spec. GGG-R-791H, which establishes uniform standards for accuracy, graduations, and size. Blades are labeled with numeric increments that are less than 1" for quick reading.
    Blades with Square Head with Built-In Level and Scriber
    Image of Product. Front orientation. Contains Annotated. Squares. Starrett High-Accuracy Combination Squares, Blades with Square Head with Built-In Level and Scriber.
    Image of Product. Inch/Metric. Front orientation. ZoomedIn view. Contains Annotated, MultipleImages. Squares. Starrett High-Accuracy Combination Squares, Blades with Square Head with Built-In Level and Scriber, Inch, Metric, 4/32" Numeric Graduations - 2, 10 mm Numeric Graduations.

    Inch/Metric

    Square head checks 90° angles.
    Hardened Steel Square Head—Hardened-steel square heads are more durable and last longer than cast iron square heads.
    Satin Blade—Satin blade appearance is corrosion resistant and reduces glare.
    Etched—Etched graduation marks are wear resistant.
    Blade
    Graduation
    Cast Iron
    Square Head
    Hardened Steel
    Square Head
    Blade Lg.
    Front Graduations (Numeric
    Graduations)
    Back Graduations (Numeric
    Graduations)
    Lg. Accuracy
    Wd.
    Thk.
    Material
    Appearance
    Color
    Color
    Type
    Head
    Lg.
    Each
    Head
    Lg.
    Each
    Inch/Metric
    11 3/4"/300 mm0.5 mm (10 mm), 1/32" (4/32")1 mm (10 mm), 1/64" (8/64")-0.0035" to 0.005"/
    -0.09 mm to 0.15 mm    		1"3/32"SteelSatinChrome, SilverBlackEtched4 1/2"000000000000003 5/8"00000000000000
    23 1/2"/600 mm0.5 mm (10 mm), 1/32" (4/32")1 mm (10 mm), 1/64" (8/64")-0.0035" to 0.007"/
    -0.11 mm to 0.25 mm    		1"3/32"SteelSatinChrome, SilverBlackEtched————03 5/8"0000000000000
     
    Replacement Square Head Lockbolts
    Each
    Replacement Lockbolt for Square, Center, and Protractor Heads000000000000
    Blades with Square Head with Built-In Level, Center Head, Reversible Protractor Head, and Scriber
    Image of Product. Front orientation. Contains Annotated. Squares. Starrett High-Accuracy Combination Squares, Blades with Square Head with Built-In Level, Center Head, Reversible Protractor Head, and Scriber.
    Image of Product. Inch/Metric. Front orientation. ZoomedIn view. Contains Annotated, MultipleImages. Squares. Starrett High-Accuracy Combination Squares, Blades with Square Head with Built-In Level, Center Head, Reversible Protractor Head, and Scriber, Inch, Metric, 4/32" Numeric Graduations - 2, 10 mm Numeric Graduations.

    Inch/Metric

    Square head checks 90° angles.
    Protractor head measures angles.
    Center head identifies the center on pipes, rods, and shafts.
    Hardened Steel Square Head—Hardened-steel square heads are more durable and last longer than cast iron square heads.
    Satin Blade—Satin blade appearance is corrosion resistant and reduces glare.
    Etched—Etched graduation marks are wear resistant.
    Blade
    Graduation
    Cast Iron
    Square Head
    Hardened Steel
    Square Head
    Blade Lg.
    Front Graduations (Numeric
    Graduations)
    Back Graduations (Numeric
    Graduations)
    Lg. Accuracy
    Wd.
    Thk.
    Material
    Appearance
    Color
    Color
    Type
    Head
    Lg.
    Each
    Head
    Lg.
    Each
    Inch/Metric
    11 3/4"/300 mm0.5 mm (10 mm), 1/32" (4/32")1 mm (10 mm), 1/64" (8/64")-0.0035" to 0.005"/
    -0.09 mm to 0.15 mm    		1"3/32"Steel—SilverBlackEtched4 1/2"00000000000000————0
    11 3/4"/300 mm0.5 mm (10 mm), 1/32" (4/32")1 mm (10 mm), 1/64" (8/64")-0.0035" to 0.005"/
    -0.09 mm to 0.15 mm    		1"3/32"SteelSatinChrome, SilverBlackEtched————03 5/8"00000000000000
    23 1/2"/600 mm0.5 mm (10 mm), 1/32" (4/32")1 mm (10 mm), 1/64" (8/64")-0.0035" to 0.007"/
    -0.11 mm to 0.25 mm    		1"3/32"Steel—SilverBlackEtched4 1/2"0000000000000————0
     
    Replacement Square Head Lockbolts
    Each
    Replacement Lockbolt for Square, Center, and Protractor Heads000000000000

    Starrett High-Accuracy Combination Square Blades

    Image of Product. Inch/Metric. Front orientation. ZoomedIn view. Contains Annotated, MultipleImages. Combination Square Blades. Starrett High-Accuracy Combination Square Blades, 10 mm Numeric Graduations.

    Inch/Metric

    Use these blades with Starrett High-Accuracy Combination Square Heads. They meet Fed. Spec. GGG-R-791, which establishes uniform standards for accuracy, graduations, and size. Blades are labeled with numeric increments that are less than 1" for quick reading. All have a corrosion-resistant satin chrome-plated finish that reduces glare and wear-resistant etched markings.
    Graduation
    Lg.
    Front Graduations (Numeric
    Graduations)
    Back Graduations (Numeric
    Graduations)
    Lg. Accuracy
    Wd.
    Thk.
    Color
    Color
    Type
    Each
    Inch/Metric
     
    Satin Chrome-Plated Steel
    11 3/4"/300 mm0.5 mm (10 mm), 1/32" (4/32")1 mm (10 mm), 1/64" (8/64")-0.0035" to 0.005"/-0.09 mm to 0.15 mm1"3/32"SilverBlackEtched00000000000000
    23 1/2"/600 mm0.5 mm (10 mm), 1/32" (4/32")1 mm (10 mm), 1/64" (8/64")-0.0035" to 0.007"/-0.11 mm to 0.25 mm1"3/32"SilverBlackEtched0000000000000
     

    Mitutoyo Squareness Gauges

    Image of Product. Front orientation. Squareness Gauges. Mitutoyo Squareness Gauges.
    Ensure parts are perfectly straight and square—these gauges detect surface deviations so small the human eye can’t see them. As you slide the lever on these gauges up and down, a dial test indicator moves along the vertical surface of your workpiece, measuring how straight and square it is. Checking for slight angles on machined parts or frames verifies they will align properly and function correctly. You can adjust the squareness of the gauges to fine-tune for differences in temperature and humidity and to maintain precision over years of use. Measure an object for height with the scale along the side of the gauge. The housing is cast iron, so the gauges are stable and stand up to frequent use.
    Material
    Base
    Distance Measured
    Range, mm
    Accuracy
    Measuring Increments,
    mm
    Squareness
    Tolerance, mm
    Straightness
    Tolerance, mm
    Housing
    Column
    Lg.
    Wd.
    Includes
    Mfr. Model
    No.
    Each
    0 to 150±0.003 mm0.0020.0030.002Cast IronAluminum
    		7"4"Dial Indicator, Micrometer311-2150000000000000000
    0 to 250±0.003 mm0.0020.0090.0035Cast IronAluminum
    		7"4"Dial Indicator, Micrometer311-225000000000000000
    0 to 450±0.003 mm0.0020.0060.0025Cast IronAluminum
    		7"4"Dial Indicator, Micrometer311-245000000000000000
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